Could you provide more context? Perhaps you meant:
* "A Mart": This is a general store found in various Pokemon games. It sells basic items like Potions and Poke Balls.
* "Department Store": In Pokemon Diamond, Pearl, and Platinum, a Department Store is a large shop with various floors selling different goods.
* "A specific store in a fan game or a fan-made creation": It's possible "Advance Mart" is a store name from a custom Pokemon game or a fan-made world.
If you could provide more information about where you encountered the term "Advance Mart", I can give you a more accurate answer!